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| author |   Ralf Baechle <ralf@linux-mips.org> | 2007-08-13 12:44:41 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-08-27 02:16:56 +0100 |
| commit | 9975e77df5428a1afff57fd8f76a1bc0bfc247fc (patch) | |
| tree | 8ebe240bcbec6c17402ab2c69013fa2106157f48 | |
| parent | [MIPS] MT: Use kallsyms in CPU state dump (diff) | |
| download | linux-dev-9975e77df5428a1afff57fd8f76a1bc0bfc247fc.tar.xz linux-dev-9975e77df5428a1afff57fd8f76a1bc0bfc247fc.zip | |
[MIPS] Gcc 3.3 build fixes.
Work around gcc 3.3's unability to evaluate that certain expressions indeed
are constant.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/mm/init.c | 9 | ||||
| -rw-r--r-- | include/asm-mips/pgtable.h | 6 |
2 files changed, 13 insertions, 2 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index b8cb0dde3af0..09d91505b90c 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -26,6 +26,7 @@ #include <linux/proc_fs.h> #include <linux/pfn.h> +#include <asm/asm-offsets.h> #include <asm/bootinfo.h> #include <asm/cachectl.h> #include <asm/cpu.h> @@ -498,7 +499,13 @@ unsigned long pgd_current[NR_CPUS]; * different layout ... */ #define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order))) -pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER); + +/* + * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER + * are constants. So we use the variants from asm-offset.h until that gcc + * will officially be retired. + */ +pgd_t swapper_pg_dir[_PTRS_PER_PGD] __page_aligned(_PGD_ORDER); #ifdef CONFIG_64BIT #ifdef MODULE_START pgd_t module_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER); diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h index e2fb9dbac3fc..d2ee28156743 100644 --- a/include/asm-mips/pgtable.h +++ b/include/asm-mips/pgtable.h @@ -172,7 +172,11 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt #define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) #define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; +/* + * We used to declare this array with size but gcc 3.3 and older are not able + * to find that this expression is a constant, so the size is dropped. + */ +extern pgd_t swapper_pg_dir[]; /* * The following only work if pte_present() is true. |